<template>
    <div class="app-container">
        <div class="ccInfo">
            <img :src="coursePublish.cover">
            <div class="main">
                <h2>{{ coursePublish.title }}</h2>
                <p class="gray"><span>共{{ coursePublish.lessonNum }}课时</span></p>
                <p><span>所属分类：{{ coursePublish.subjectLevelOne }} — {{ coursePublish.subjectLevelTwo }}</span></p>
                <p>课程讲师：{{ coursePublish.teacherName }}</p>
                <h3 class="red">￥{{ coursePublish.price }}</h3>
            </div>
        </div>
        <div style="text-align: center;">
            <el-button type="primary" @click="prev()">上一步</el-button>
            <el-button :disabled="publishBtnDisabled" type="primary" @click="publish()">发布课程</el-button>
        </div>
    </div>
</template>

<script>
import courseApi from '@/api/course'
export default {
    data() {
        return {
            publishBtnDisabled: false, // 按钮是否禁用
            coursePublish: {}
        }
    },
    created() {
        if (this.$parent.courseId) {
            this.fetchCoursePublishById(this.$parent.courseId)
        }
    },
    methods: {
        // 获取课程发布信息
        fetchCoursePublishById(id) {
            courseApi.getCoursePublishById(id).then(response => {
                this.coursePublish = response.data.item
            })
        },

        prev() {
            this.$parent.active = 2
        },
        publish() {
            this.publishBtnDisabled = true
            courseApi.publishCourseById(this.$parent.courseId).then(response => {
                this.$parent.active = 3
                this.$message.success(response.message)
            })
        }
    }
}
</script>

<style scoped>
.ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative;
}

.ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
}

.ccInfo .main {
    margin-left: 520px;
}

.ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
}

.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}

.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}

.ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
}
</style>